1. Cooperate with sales personnel to provide pre-sales technical support work;
2. Responsible for on-site investigation of clients, understanding and obtaining their technical requirements;
3. Responsible for conducting market research, introducing and promoting products, developing end customers, and conducting business marketing;
4. Participate in bidding and cooperate with the preparation of bidding documents; Responsible for contract negotiation and specific matters related to contract signing;
5. Deeply understand the customer's business model and sewage treatment issues, and provide professional consultation and solutions to customers;
6. Cooperate with sales to carry out business payment collection work;
7. Provide professional after-sales service and technical support to customers together with the company's technical personnel.

1. Bachelor's degree or above, with a preference for majors in science and engineering;
2. Experienced in engineering project budgeting, quality inspection, material management, safety, and construction;
3. Experience and ability to communicate and coordinate with clients on engineering project sites;
4. Honest and confident, diligent and tenacious, with a high level of work enthusiasm, possessing good teamwork spirit, able to independently analyze, judge and solve problems, and able to withstand significant work pressure.